A New Approach for Fast Transmission to Remote Cooperative Groups with a New Key Paradigm using Voice Authentication Amith T A*, Prathima Mabel J, Rekha Jayaram, and Bindu Bhargavi S.M Dayanand Sagar College Of Engineering, Bangalore Karnataka, India {amith.tallanki,prathimamabel,rekhajayaram20,bindu.sm}@gmail.com Abstract. Any newly emerging network must deal with problems of ef- fectively and securely broadcasting data to remote co-operative groups. Limited or no network connectivity, absence of valid encryption/decryption protocols and the individual metrics concerning the sender are some of the problems that plague newly established networks. [1] Existing tech- niques to overcome these problems do not address future concerns such as scalability, security etc. The generation of a valid key that does not need to be changed or managed regularly is essential to a newly estab- lished network as it offloads the computational overhead and reduces the connection cost to a fraction of what it was before. This paper explores the possibility of generating such a key making use of acoustic model training and voice tag creation. It also provides an overview for sim- ple, efficient and easy addition or deletion of members to co-operative groups, while keeping the rekeying mechanism as flexible as possible so as to increase the network’s robustness. The implementation is designed in such a way that the group size does not factor into the computational overhead or the communication cost. The strong encryption protocol de- tailed in this paper, alongwith the a simple and easy way to manage the implementation make this a viable solution to the problems that are associated with new networks. Keywords: Ad hoc networks, broadcast, cooperative computing, access control, information security, key management 1 Introduction The recent uptick in the adoption of Wireless Mesh Networks (WMN’s) has ex- posed the how deeply the problem of security and privacy is rooted in any newly established network. A WMN is by it’s very nature an open and distributed sys- tem. A WMN is multihop layered network which provides high speed Internet access points with dedicated stationary mesh routers. [2] The final layer consists of a large number of mobile device users. As such, it is essential to enforce network